{"id":101111,"date":"2023-07-19T21:30:00","date_gmt":"2023-07-20T05:30:00","guid":{"rendered":"https:\/\/www.juneauempire.com\/news\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/"},"modified":"2026-02-18T10:13:57","modified_gmt":"2026-02-18T19:13:57","slug":"its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers","status":"publish","type":"post","link":"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/","title":{"rendered":"It’s not easy being evergreen in Juneau, as infestation of budworms lingers"},"content":{"rendered":"

An outbreak of western blackheaded budworms that’s been damaging trees in Southeast Alaska<\/a> for the past few years is tapering off in most places, but a large infestation is still occurring in Juneau because the larvae arrived here later than some other parts of the region, U.S. Forest Service officials said Thursday.<\/p>\n

Such outbreaks have been a normal occurrence every 30 years or so for at least the past century, typically lasting two to three years, and are triggered by “certain environmental conditions,” said Elizabeth Graham, a Forest Service entomologist, during an online press conference. The budworms, which are the larval stage of budworm moths, feed on spruce, hemlock and other trees, leaving the damaged needles with a brownish appearance.<\/p>\n

“It can make hillsides look like they’re dying,” she said. “The reality is they’re just feeding on new growth, so in most cases the trees have been able to recover.”<\/p>\n<\/p>\n

Also, even infestations severe enough to kill some trees can be beneficial to the forest’s overall health in the long run, said Molly Simonson, a Forest Service silviculturist, during Thursday’s press conference.<\/p>\n

“Trees do die, whether it’s clusters of them during a particular event or individually during forest development,” she said. “Having that scattered among the forest is not a bad thing.”<\/p>\n

An update at the forest service’s <\/a>website<\/a>, based on data still being collected, states defoliation occurred most heavily in 2021 and 2022, with the worst damage occurring on Admiralty, Kupreanof, Mitkof, and Wrangell Islands, as well as several locations on the mainland. Aerial surveys indicate about 685,000 acres of forest suffered damage — with “mortality” damage consisting of about 73,500 acres of western hemlock in 2022.<\/p>\n

Juneau is an outlier in the region, however, since areas ranging from downtown to Echo Cove have significant defoliation occurring, Graham said.<\/p>\n

“Mostly it’s because Juneau is really on the fringe of the outbreak,” she said. “We really just started seeing some of the damage here last year.”<\/p>\n

But while infestations are peaking in some areas of Juneau, Graham said she expects activity to taper off considerably by next year.<\/p>\n

While infestation cycles every few decades have been normal, Graham said climate change may be a factor in the current outbreak.<\/p>\n

“If we have fewer frost-free days that tends to be an association with triggering an outbreak,” she said. The outbreaks didn’t extend to British Columbia, she added, “maybe because it was too warm.<\/p>\n

“It could be we’re in this perfect little climate window right now for outbreaks,” she said.<\/p>\n

But Graham emphasized other variables also are involved — and after outbreaks end due to parasitism, predation, disease and starvation among the budworms “there’s also a time variable to building up that population” again.<\/p>\n

• Contact Mark Sabbatini at mark.sabbatini@juneauempire.com or (907) 957-2306.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Outbreak in Southeast Alaska since 2020 mostly tapering off elsewhere, officials say. <\/p>\n","protected":false},"author":717,"featured_media":101112,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4,1077],"tags":[253],"class_list":["post-101111","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-top-news","tag-environment"],"yoast_head":"\nIt’s not easy being evergreen in Juneau, as infestation of budworms lingers - Juneau Empire<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"It’s not easy being evergreen in Juneau, as infestation of budworms lingers - Juneau Empire\" \/>\n<meta property=\"og:description\" content=\"Outbreak in Southeast Alaska since 2020 mostly tapering off elsewhere, officials say.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/\" \/>\n<meta property=\"og:site_name\" content=\"Juneau Empire\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-20T05:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-18T19:13:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.juneauempire.com\/wp-content\/uploads\/sites\/12\/2023\/07\/33362778_web1_Budworms23-JUE-230722-tree_1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1365\" \/>\n<meta name=\"author\" content=\"Mark Sabbatini\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Sabbatini\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/\",\"url\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/\",\"name\":\"It’s not easy being evergreen in Juneau, as infestation of budworms lingers - Juneau Empire\",\"isPartOf\":{\"@id\":\"https:\/\/www.juneauempire.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.juneauempire.com\/wp-content\/uploads\/sites\/12\/2023\/07\/33362778_web1_Budworms23-JUE-230722-tree_1.jpg\",\"datePublished\":\"2023-07-20T05:30:00+00:00\",\"dateModified\":\"2026-02-18T19:13:57+00:00\",\"author\":{\"@id\":\"https:\/\/www.juneauempire.com\/#\/schema\/person\/0fcfb8f8f19dfaa01fafb7d098530b99\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.juneauempire.com\/2023\/07\/19\/its-not-easy-being-evergreen-in-juneau-as-infestation-of-budworms-lingers\/#primaryimage\",\"url\":\"https:\/\/www.juneauempire.com\/wp-content\/uploads\/sites\/12\/2023\/07\/33362778_web1_Budworms23-JUE-230722-tree_1.jpg\",\"contentUrl\":\"https:\/\/www.juneauempire.com\/wp-content\/uploads\/sites\/12\/2023\/07\/33362778_web1_Budworms23-JUE-230722-tree_1.jpg\",\"width\":2048,\"height\":1365,\"caption\":\"Pine needles on a tree in the Mendenhall Valley show aftermath of western blackheaded budworms damage Thursday. 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